525003145 has 4 divisors (see below), whose sum is σ = 630003780. Its totient is φ = 420002512.

The previous prime is 525003131. The next prime is 525003161. The reversal of 525003145 is 541300525.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 111450249 + 413552896 = 10557^2 + 20336^2 .

It is a cyclic number.

It is not a de Polignac number, because 525003145 - 2²¹ = 522905993 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52500310 + ... + 52500319.

It is an arithmetic number, because the mean of its divisors is an integer number (157500945).

Almost surely, 2^525003145 is an apocalyptic number.

It is an amenable number.

525003145 is a deficient number, since it is larger than the sum of its proper divisors (105000635).

525003145 is a wasteful number, since it uses less digits than its factorization.

525003145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105000634.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 525003145 is about 22912.9471042029. The cubic root of 525003145 is about 806.7159338767.

The spelling of 525003145 in words is "five hundred twenty-five million, three thousand, one hundred forty-five".